Mohamed Salah scored twice, including his 50th Premier League goal, to help Liverpool hold off Crystal Palace in a back-and-forth match at Anfield.

Little did we know when referee Jon Moss issued James Milner with a red card during Liverpool's win over Crystal Palace that the pair had a history that extended far back beyond their Premier League days.

It came to light after the incident that Moss and Milner have known each other for a long, long time as the former was actually the latter's PE teacher at junior school.

Sure enough, a photo soon emerged on social media showing Moss (left) in his role as coach of the Westbrook Lane Primary School...